What is a Fresnel Prism Lens

Prisms: 1.00D to 40.00D 
Plus powers to 16.00D
Minus powers to 14.00D
D-25 segs ("Adds") 1.00 D to +6.00D

•  3M™ Press-On™ Optics, also known as Fresnel Prisms, and Press-On Aspherics, provide a system for creating prismatic and spherical corrections.
•  3M™ Press-On™ Optics offer the eye care professional and the patient several benefits:
•  A simple, therapeutic, inexpensive, way to correct several visual disorders.
•  Provide an immediate correction.
•  They are more comfortable, more cosmetically appealing treatment for strabismus and dipolpia than conventional prisms.
•  They add NO noticeable weight or thickness to the spectacle.
•  Press-on prism material is flexible static vinyl which can easily be cut to shape with scissors to determine the acceptance of a proposed corrective prescription.
•  Adheres with just water to existing lenses, yet it can be easily repositioned.
•  Apply a Press-On sphere or prism to the back surface of one or both lenses of the patient`s eyeglasses with just water.
•  It can be applied to the entire lens or to any region of the lens.
•  A full range of seventeen powers from 1.00 to 40.00 prism diopters allows you to broaden therapeutic uses and provides additional treatment options in your practice.

Made of polyvinyl chloride
1mm thick
63.5 mm diameter
 application of a press on

Photo used with with permission from 3M